My firewall program tells me that a computer is sending packets to my computer every few seconds. My firewall has been blocking the packets. The program tells me that the sending computer is trying to send them to another computer through my computer. But I have my software setup to not forward those packets to the destinatin computer.

This has been going on for a few days now. Non-stop! I know the ip of the source computer and I have the ip of the destination computer.

Why is this happening? What can I do about it? Can I find out who is doing this? Will this degrade my internet access. I found this out because my cable access has really sucked lately, I am loosing packets peridically then it does great then 15 seconds of loss etc. etc.

Norton says no viruses and no trojan horses.